Blackpool wasted several chances to secure a vital win and had to settle for a point against Chesterfield.
New Seasiders' signing Claus Jorgensen crossed for youngster Simon Gillett to head home after 33 minutes.
Blackpool continued to miss chances and Chesterfield found themselves back in the game on the hour when Paul Hall set up Kevan Hurst to score from 12 yards.
Rory Prendergast and Keigan Parker came on in an attempt to force a win for Blackpool, but Chesterfield held out.
Blackpool: Evans, Barker, Jackson, Evatt, Coid, Gillett (Parker 77), Jorgensen, Southern, Hoolahan (Prendergast 84), Vernon (Morrell 66), Burgess.
Subs Not Used: Edge, Joseph.
Booked: Hoolahan, Morrell.
Goals: Gillett 33.
Chesterfield: Roche, Picken, Downes, Hazell, O'Hare (Nicholson 45), Hall, Niven, Allott, Hurst, Shaw (Larkin 58), Folan.
Subs Not Used: Jordan, Smith, Allison.
Goals: Hurst 60.
Ref: C Webster (Tyne & Wear).